Tmk national uthoorapkinx



Y (No Model.)

` w. wf. HOLMES. RAILWAY TIE PLATE.

kPaterlted Peb. 13, 1894.

UNrrnD STATES Parenti* Ormes.

WILLIAM IN. HOLMES, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO THE SER'VIS RAILROAD TIE PLATE COMPANY.

RAI LWAYTI E PLATE.

SPECIFICATION forming part of Letters Patent No. 514,465, dated February13, 1894.

Application tiled June 2, 1893. Serial No. 476,367. (No model.)

.To 1f/ZZ whom, t may concern,.-

Be it known that I, WILLIAM W. HOLMES, a citizen of the United States,residing at Ohr cago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Railway-Tie Plates; andI hereby declare the following to be a full, clear, uand exactdescription of the same, reference being had to the accompanyingdrawings, in

1o which- Figure 1 is a perspective view of a compound tieplate,embodying my invention, the dotted lines indicating the position of therail when in service. Fig. 2 is a bottom perspecr5 tive view of theupper or rail plate, and Fig. 3 is a bottom perspective view of thelower or bed-plate.

Like symbols refer to like parts wherever they occur.

My invention relates to the construction of that class of devicescommonly termed wearplates or tie-plates, which are interposed betweenthe rail and the tie to protect the tie from rapid destruction andprevent any lateral movement of the rail; and has for its object theproduction of a simple, efcient, cheap, and easily manufactured trussedtieplate, provided with lateral supports or abutments for the footflange of the rail.

To this end the invention, generally stated, consists in the combinationwith a trussed 'base plate or tie-plate proper, of a superposedrail-plate provided with abutments for the foot flange of the rail.

There are other, minor, features of invention relating to the particularmeans for combining the plates, ali as will hereinafter more fullyappear.

In railway tie-plates of the general charac- 4o ter to which thisinvention belongs,the rib or truss flanges on the under side of theplate are preferably arranged parallel with the ber of the tie andtransversely of the rail, so as to prevent the buckling of the.tieplate, as well as to avoid rupture of the fiber of the tie, while theabutinents on the upper side of the tieplate for the lateral supportofthe foot flange of the rail, are at right angles to the truss ribs or.flanges on the under side of the 5o plate. As a consequence of this,single part tie-plates of the usual forms, are as a general rule,necessarily produced by casting. In case of my compound tie-plate it maybe produced by either castingorrolling-a nd as rolling produces thelightest, strongest, and most elastic or resilient plate-such method ofproduction is to be preferred, though the invention isnot limitedthereto.

I will now proceed to describe my invenl tion more fully, so that'othersskilled in the 6c art to which it appertains may apply the same..

In the drawingsA indicates the base-plate, and B the railplaie of acompound tie-plate.

The base-plate A has upon its under face one or morepreferably a seriesof ribs or flanges a, adapted to enter vthe railway tie parallel withthe fiber thereof so as not to tear or destroy the iber-which ribs servenot only to truss or strengthen the plate and prevent its buckling underthe tread of the loaded 7o wheel, but also to prevent the creeping ormoving of the tie-plate on the tie. About midlength of the base-plate itis provided with one or more perforations o/-preferably a series, and ofpolygonal shape-to receive a 7 5 projection orprojections on the underface of the superposed rail-plate B, and said bascplateA may also beprovided with one or more spike holes a2. V

The superposed rail plate B is preferably 8o provided with a series ofthree or more prof jections or ribs, of which the two on its uppersurface are parallel and bound the rail seat?) forming the lateralabutments b and b2, for the foot flange of the rail (shown in dottedline) while that upon its under surface lies midway between and is cutaway at points to form the projection (or projections) c, which entersthe perforation a of the base plate A. Rail-plate B, as shown in thedrawings, is also 9o perforated, as at c2, in line with perforation a2of base plate A for the passage of the spike.

In making my compound tie-plate I prefer to roll two bars the first ofwhich shall be a multiple of base plate A having one or morelongitudinal ribs oz, and the second of which shall be amult'iple ofrail plateB having longitudinal ribs, two upon its upper surfacecorresponding to the abutments b b2, and one upon its under surfacecorresponding to proroo jection c. Such bars are then cut into properlengths for tie-plates, and the sections for the base-plate A arepunched as at ct a2, while those for the rail plate are punched as ,ato2 for the spike, and as at cl, d, cl, to remove such portions of thecentral rib as are not required for the projections c Which enter theperfora-` tlons a of the b ase plate A. The separate sectionsA B, canthus be produced yby rolling as Well as by casting and will, whenplacedfi'n position one upon the other, produce a compound tie-platewherein the truss `ribs of the base plate and the abutments of the railplate for the foot flange of the rail are at rightangles, the positionrequired to best supportthe plate and prevent the buckling thereof and@prevent the lateral displacement of the lrail. It will be at onceevident to one skilled in the art, that the projections (c.) may ,bemade: on the upper surfaceof ,the base plate A,andf the correspondingopening (z",),;by Whichlhi plates lock,in the rail-,plate B; andit .willalso? be evident Lto Vsuch persons, that 4by a ,properi arrangement ofthe spike openingsvacofi the two plates the openings a and the projec-itions c may be omittedgand .having hereinlr shownand'describedthebestmode ,known to L me of carrying out .myinventiomIii'lclude; the above alternative, and all equivalent constructionsinthe following claims.l Having 1thus described 4my invention, what?yIclaim, and desire to A secure by `Letters Patent, is-

1. The combination in a tie-plate, of a baseplate having one or moreribs or flanges on Vits under face, and a superposed rail platehavingabutments fortlle rail H ange; 4s illgstgtntially'as and for thepurposes specified.

2. Thecomhinatioh in atie-plate, of a baseplate and a superposedrail-plate, both of said plates having ribs or anges, the ribs on oneplate being at au angle to those on the other, one of said plates havingan orifice adapted to receive a rib or ,projection on the other plate;substantially as and for the purposes specified.

3. A compound tie-plate, composed of a baseplate having kone,emmerslongitudinal ribs o r flanges a and a series of 1slotsu, and asuperposedlrailgplate having, '1 abutments b band projectionsc;substantrail-ly asand Ifor the purposes speQiiied.

WILLIAM W. AimLM- irs

